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2.3 Magnitude Earthquake Shakes Sonoma County

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CALISTOGA (BCN) — A 2.3-magnitude earthquake shook Sonoma County Saturday night, according to the U.S. Geological Survey.

The quake struck about 9:45 p.m. and was centered one mile northwest of The Geysers and 26 miles north-northwest of Santa Rosa, the USGS said.

The USGS reported the temblor to have a depth of 0.7 miles.

The area of The Geysers stands as the largest single geothermal field in the world, according to the U.S. Department of Energy.

The region continually produces earthquakes between 0.5 and 3.0 on the Richter scale, related to deep-well injection that the Department of Energy said is necessary for the extended and sustained production of geothermal resources at the site.